DaveManuel.com · Institutional Ownership · Who Owns It
ALKERMES PLC (ALKS)
Institutional ownership reported to the SEC as of Q2 2026, across 32 quarters.
427
Reporting holders
$9.4B
Reported value
106.2%
Of shares outstanding
0.7%
Calls
0.5%
Puts
+34
Holder change
Institutions report 178,158,456 shares against 167,763,272 outstanding. Shares only - option lines are excluded, which is why this can be compared with the company at all. The count comes from the cover page of the company's own most recent report, so it is dated when that was filed rather than at quarter end. Over 100% because an adviser and a sub-adviser can both report the same shares, and both are counted.
Calls and puts are the parts of reported value carried in derivative lines rather than shares, and they point in opposite directions: a manager holding calls is positioned for the security, one holding puts against it - or hedging shares they already own, which is why index funds carry so many. Most sites add the two together and report one figure, which averages away the only interesting part.
Holders
| Filer | Value | Shares | Their book | Held | Change |
|---|---|---|---|---|---|
| BlackRock, Inc. | $1.5B | 29,235,739 | 0.02% | 8q | +3.3%+$48.3M |
| BAKER BROS. ADVISORS LP | $524.6M | 10,012,267 | 2.63% | 9q | HELD |
| VANGUARD PORTFOLIO MANAGEMENT LLC | $497.3M | 9,490,818 | 0.02% | 2q | HELD |
| STATE STREET CORP | $480.0M | 9,160,575 | 0.01% | 31q | -3.2%-$16.0M |
| VANGUARD CAPITAL MANAGEMENT LLC | $393.7M | 7,515,025 | 0.01% | 2q | +1.2%+$4.6M |
| PRICE T ROWE ASSOCIATES INC /MD/ | $353.0M | 6,737,328 | 0.04% | 31q | +44.4%+$108.6M |
| RENAISSANCE TECHNOLOGIES LLC | $338.5M | 6,460,928 | 0.47% | 31q | +4.9%+$15.7M |
| GEODE CAPITAL MANAGEMENT, LLC | $234.7M | 4,477,876 | 0.01% | 31q | +7.1%+$15.5M |
| DIMENSIONAL FUND ADVISORS LP | $219.8M | 4,194,873 | 0.04% | 31q | -7.2%-$17.2M |
| Deep Track Capital, LP | $209.6M | 4,000,000 | 3.05% | 3q | +11.4%+$21.5M |
| AMERICAN CENTURY COMPANIES INC | $207.2M | 3,954,239 | 0.09% | 20q | -34.9%-$111.0M |
| Holocene Advisors, LP | $207.0M incl. $18.3M options CALL | 3,601,472 | 0.47% | 2q | +55.4%+$73.8M |
| Commodore Capital LP | $157.2M | 3,000,000 | 9.36% | 9q | -28.6%-$62.9M |
| WELLINGTON MANAGEMENT GROUP LLP | $147.5M | 2,814,804 | 0.03% | 31q | -5.2%-$8.1M |
| PRIMECAP MANAGEMENT CO/CA/ | $132.5M | 2,528,680 | 0.08% | 31q | HELD |
| FIRST TRUST ADVISORS LP | $126.8M | 2,421,016 | 0.07% | 31q | -18.5%-$28.7M |
| CHARLES SCHWAB INVESTMENT MANAGEMENT INC | $122.3M | 2,335,117 | 0.02% | 31q | +4.4%+$5.2M |
| Nuveen, LLC | $121.8M | 2,324,197 | 0.03% | 6q | -5.5%-$7.1M |
| NORGES BANK | $113.0M | 2,156,814 | 0.01% | 32q | +10.8%+$11.1M |
| BVF INC/IL | $112.9M | 2,154,704 | 2.89% | 2q | +7.7%+$8.1M |
| GOLDMAN SACHS GROUP INC | $106.0M | 2,023,984 | 0.01% | 31q | +7.5%+$7.4M |
| Bain Capital Life Sciences Investors, LLC | $101.5M | 1,937,938 | 6.04% | 2q | +217.7%+$69.6M |
| CITADEL ADVISORS LLC | $99.1M incl. $12.9M options CALL+PUT | 1,645,101 | 0.01% | 31q | -26.6%-$35.9M |
| NORTHERN TRUST CORP | $96.0M | 1,831,619 | 0.01% | 31q | +7.9%+$7.0M |
| MORGAN STANLEY | $91.8M | 1,751,882 | 0.00% | 35q | +0.9%+$827.4K |
| RTW INVESTMENTS, LP | $87.6M | 1,672,356 | 0.75% | 12q | HELD |
| LOOMIS SAYLES & CO L P | $83.1M | 1,585,518 | 0.10% | 14q | -11.2%-$10.4M |
| Affinity Asset Advisors, LLC | $72.0M incl. $13.1M options CALL | 1,125,000 | 3.26% | 12q | -16.7%-$14.4M |
| ADAGE CAPITAL PARTNERS GP, L.L.C. | $71.7M | 1,368,000 | 0.10% | new | NEW |
| D. E. Shaw & Co., Inc. | $68.7M | 1,312,031 | 0.03% | 31q | +84.7%+$31.5M |
| Driehaus Capital Management LLC | $64.9M | 1,238,809 | 0.38% | 6q | +56.4%+$23.4M |
| VANGUARD FIDUCIARY TRUST CO | $61.7M | 1,177,945 | 0.01% | 2q | +4.3%+$2.6M |
| FRANKLIN RESOURCES INC | $61.3M | 1,170,242 | 0.01% | 20q | +541.1%+$51.8M |
| BNP PARIBAS ASSET MANAGEMENT Holding S.A. | $60.7M | 1,159,216 | 0.06% | 5q | +383.7%+$48.2M |
| FMR LLC | $59.4M | 1,134,410 | 0.00% | 19q | -14.3%-$9.9M |
| Bank of New York Mellon Corp | $57.5M | 1,097,282 | 0.01% | 31q | +5.9%+$3.2M |
| T. Rowe Price Investment Management, Inc. | $57.2M | 1,090,947 | 0.04% | 3q | +22.0%+$10.3M |
| TWO SIGMA INVESTMENTS, LP | $54.4M | 1,038,311 | 0.04% | 21q | +33.0%+$13.5M |
| Soleus Capital Management, L.P. | $53.9M | 1,029,252 | 1.86% | 3q | -47.8%-$49.3M |
| PRINCIPAL FINANCIAL GROUP INC | $51.5M | 983,822 | 0.03% | 31q | +2.7%+$1.4M |
| MARSHALL WACE, LLP | $50.8M | 969,954 | 0.04% | 3q | -2.9%-$1.5M |
| SUMMIT PARTNERS PUBLIC ASSET MANAGEMENT, LLC | $49.8M | 950,234 | 0.88% | new | NEW |
| BANK OF AMERICA CORP /DE/ | $48.1M | 918,303 | 0.00% | 31q | -24.2%-$15.3M |
| VICTORY CAPITAL MANAGEMENT INC | $48.0M | 916,709 | 0.03% | 28q | +196.7%+$31.8M |
| Pictet Asset Management Holding SA | $44.0M | 838,026 | 0.04% | 12q | -11.1%-$5.5M |
| Artisan Partners Limited Partnership | $43.5M | 831,006 | 0.07% | 26q | -25.3%-$14.7M |
| PANAGORA ASSET MANAGEMENT INC | $40.1M | 765,543 | 0.12% | 31q | -17.9%-$8.8M |
| Frazier Life Sciences Management, L.P. | $36.7M | 700,647 | 0.80% | 8q | HELD |
| Public Sector Pension Investment Board | $35.5M | 677,405 | 0.09% | 11q | HELD |
| FRONTIER CAPITAL MANAGEMENT CO LLC | $34.6M | 659,562 | 0.32% | new | NEW |
| BNP PARIBAS FINANCIAL MARKETS | $34.3M | 655,140 | 0.01% | 31q | +24.1%+$6.7M |
| AMERIPRISE FINANCIAL INC | $33.0M | 630,325 | 0.01% | 27q | -15.0%-$5.8M |
| Woodline Partners LP | $29.4M | 560,282 | 0.09% | 12q | HELD |
| Spruce Street Capital LP | $28.5M | 543,876 | 5.59% | 2q | +71.0%+$11.8M |
| SUSQUEHANNA INTERNATIONAL GROUP, LLP | $28.0M incl. $25.2M options CALL+PUT | 52,448 | 0.00% | 18q | -7.7%-$2.3M |
| MetLife Investment Management, LLC | $26.9M | 512,924 | 0.12% | 21q | +477.3%+$22.2M |
| SEGALL BRYANT & HAMILL, LLC | $26.1M | 498,222 | 0.31% | 26q | -14.9%-$4.6M |
| Artia Global Partners LP | $23.5M | 448,964 | 4.34% | new | NEW |
| Invesco Ltd. | $23.2M | 443,107 | 0.00% | 31q | -15.5%-$4.3M |
| RAYMOND JAMES FINANCIAL INC | $22.2M | 422,761 | 0.01% | 7q | +33.2%+$5.5M |
| Fisher Asset Management, LLC | $22.0M | 419,102 | 0.01% | 31q | +7.3%+$1.5M |
| GENDELL JEFFREY L | $20.7M | 395,882 | 0.18% | 2q | +50.2%+$6.9M |
| Prosight Management, LP | $20.7M | 394,389 | 3.56% | 2q | -23.2%-$6.2M |
| Legal & General Group Plc | $20.6M | 393,524 | 0.00% | 31q | +3.4%+$670.8K |
| RICE HALL JAMES & ASSOCIATES, LLC | $20.5M | 390,866 | 1.00% | 11q | HELD |
| RHUMBLINE ADVISERS | $20.3M | 387,999 | 0.02% | 31q | -13.7%-$3.2M |
| GLENMEDE TRUST CO NA | $18.9M | 361,184 | 0.08% | 17q | -4.5%-$885.8K |
| California Public Employees Retirement System | $18.2M | 347,246 | 0.01% | 20q | +5.8%+$997.8K |
| MILLENNIUM MANAGEMENT LLC | $18.1M incl. $1.3M options CALL | 319,595 | 0.01% | new | NEW |
| NOMURA ASSET MANAGEMENT INTERNATIONAL INC. | $17.7M | 337,043 | 0.03% | 3q | -0.9%-$154.8K |
| Ensign Peak Advisors, Inc | $17.6M | 335,208 | 0.03% | 19q | +3498.2%+$17.1M |
| Swiss National Bank | $16.6M | 316,900 | 0.01% | 31q | +2.1%+$345.8K |
| UBS Group AG | $15.7M | 300,350 | 0.00% | 31q | -39.3%-$10.2M |
| Eagle Health Investments LP | $15.6M | 297,302 | 2.58% | 4q | +24.6%+$3.1M |
| GW&K Investment Management, LLC | $15.3M | 292,387 | 0.12% | new | NEW |
| JANE STREET GROUP, LLC | $15.1M incl. $14.6M options CALL+PUT | 9,990 | 0.00% | 15q | +75.3%+$6.5M |
| Senator Investment Group LP | $14.4M | 275,000 | 0.53% | 2q | +17.0%+$2.1M |
| JPMORGAN CHASE & CO | $14.2M | 262,721 | 0.00% | 18q | -93.6%-$207.4M |
| NEUBERGER BERMAN GROUP LLC | $13.6M | 260,208 | 0.01% | 13q | +31.9%+$3.3M |
| C WorldWide Group Holding A/S | $13.1M | 250,000 | 0.32% | 7q | HELD |
| STEMPOINT CAPITAL LP | $13.0M | 248,015 | 2.24% | 2q | +54.1%+$4.6M |
| S&CO INC | $12.8M | 244,760 | 0.74% | 31q | HELD |
| Palo Alto Investors LP | $12.7M | 242,560 | 1.76% | 23q | HELD |
| PEREGRINE CAPITAL MANAGEMENT LLC | $12.2M | 232,255 | 0.40% | 5q | -4.8%-$615.7K |
| Russell Investments Group, Ltd. | $11.7M | 222,624 | 0.01% | 31q | +125.5%+$6.5M |
| FEDERATED HERMES, INC. | $11.6M | 221,589 | 0.02% | 21q | +652.2%+$10.1M |
| BARCLAYS PLC | $11.5M | 219,935 | 0.00% | 31q | +25.7%+$2.4M |
| Amundi | $11.4M | 217,739 | 0.00% | 16q | +236.5%+$8.0M |
| Atika Capital Management LLC | $11.3M incl. $8.4M options CALL | 55,571 | 0.74% | new | NEW |
| Atle Fund Management AB | $11.2M | 213,329 | 3.01% | 9q | -12.0%-$1.5M |
| AQR CAPITAL MANAGEMENT LLC | $11.2M | 212,968 | 0.00% | 31q | -44.5%-$9.0M |
| BFC Planning, Inc. | $10.8M | 206,009 | 0.44% | 7q | +13190.9%+$10.7M |
| Rock Springs Capital Management LP | $10.5M | 199,811 | 0.51% | 4q | +8.6%+$829.2K |
| WELLS FARGO & COMPANY/MN | $10.4M | 199,433 | 0.00% | 31q | +69.1%+$4.3M |
| CALIFORNIA STATE TEACHERS RETIREMENT SYSTEM | $10.3M | 197,412 | 0.01% | 31q | +7.4%+$713.5K |
| Schonfeld Strategic Advisors LLC | $10.2M | 195,174 | 0.04% | 2q | +1076.9%+$9.4M |
| Aberdeen Group plc | $10.2M | 193,805 | 0.01% | new | NEW |
| DEUTSCHE BANK AG\ | $10.0M | 191,316 | 0.00% | 34q | +27.8%+$2.2M |
| Tetragon Partners GP Ltd | $10.0M | 189,979 | 1.57% | 5q | +18.9%+$1.6M |
| Rhenman & Partners Asset Management AB | $9.7M | 185,250 | 0.92% | 31q | +39.0%+$2.7M |
Showing the largest 100 of 427 reported holders.
What the company announced
Form 8-K filings from the last 120 days, showing only the items worth a reader's attention. Earnings releases, exhibit attachments and general disclosures are filed constantly and are left out. Filed is when the SEC received it; event is the date the company says the thing happened.
| Filed | Event date | What | Source |
|---|---|---|---|
| 2026-09-16 | 2026-09-14 | Directors or officers departed or appointed | filing |
| 2026-08-12 | 2026-08-12 | Material agreement entered | filing |
| 2026-08-03 | 2026-02-24 | Directors or officers departed or appointed | filing |
What the insiders did
Open market purchases and sales reported on Form 4 in the last 180 days. Grants, option exercises and shares surrendered to cover tax are left out: they are compensation rather than a decision to buy or sell. Where a broker filled one order in tranches the lines are summed, because it was one decision.
Officers and directors
| Date | Insider | Role | Side | Shares | Value |
|---|---|---|---|---|---|
| 2026-08-03 | snyderman nancy lynn MD | Director | Sold | 44,472 | $2.2M |
| 2026-05-29 | Parisi Samuel Joseph | VP, Finance (Interim PAO) | Sold | 16,217 | $687.0K |
| 2026-07-01 | Hopkinson Craig C. | EVP R&D, Chief Medical Officer | Sold | 9,000 | $463.6K ×2 |
| 2026-08-03 | Hopkinson Craig C. | EVP R&D, Chief Medical Officer | Sold | 9,000 | $437.2K |
| 2026-09-01 | Hopkinson Craig C. | EVP R&D, Chief Medical Officer | Sold | 9,000 | $422.9K |
| 2026-06-01 | Hopkinson Craig C. | EVP R&D, Chief Medical Officer | Sold | 9,000 | $375.0K |
| 2026-08-17 | Nichols Christian Todd | SVP, Chief Commercial Officer | Sold | 7,576 | $372.9K ×2 |
| 2026-07-06 | Gaffin David Joseph | EVP, CLO, Alkermes, Inc. | Sold | 2,034 | $109.9K |
Quarter by quarter
Coverage begins with the quarter ending 2018-12-31. Earlier filings exist only as occasional late amendments, too sparse to describe a market, so they are not shown.
| Quarter | Holders | Value | Shares | New | Added | Trimmed | Options |
|---|---|---|---|---|---|---|---|
| Q3 2026 | 91 | $43.7M | 1,077,499 | 7 | 31 | 22 | 0.0% |
| Q2 2026 | 427 | $9.4B | 178,158,456 | 89 | 134 | 133 | 1.2% |
| Q1 2026 | 393 | $6.2B | 176,681,205 | 68 | 112 | 147 | 0.4% |
| Q4 2025 | 367 | $5.1B | 180,427,275 | 44 | 141 | 122 | 0.6% |
| Q3 2025 | 359 | $5.2B | 173,540,859 | 43 | 139 | 132 | 0.8% |
| Q2 2025 | 355 | $4.9B | 169,449,584 | 40 | 148 | 118 | 0.5% |
| Q1 2025 | 372 | $5.7B | 172,767,434 | 60 | 122 | 133 | 0.4% |
| Q4 2024 | 345 | $4.8B | 168,099,262 | 39 | 110 | 120 | 0.2% |
| Q3 2024 | 337 | $5.0B | 179,242,358 | 53 | 113 | 112 | 0.1% |
| Q2 2024 | 323 | $4.4B | 180,301,465 | 43 | 128 | 105 | 0.2% |
| Q1 2024 | 337 | $4.9B | 180,684,567 | 57 | 109 | 114 | 0.5% |
| Q4 2023 | 304 | $5.0B | 178,938,168 | 48 | 119 | 78 | 0.2% |
| Q3 2023 | 306 | $4.6B | 163,929,865 | 52 | 135 | 74 | 0.8% |
| Q2 2023 | 290 | $5.1B | 160,692,520 | 49 | 101 | 88 | 0.6% |
| Q1 2023 | 270 | $4.6B | 162,814,495 | 35 | 88 | 84 | 1.1% |
| Q4 2022 | 276 | $4.3B | 162,220,816 | 43 | 91 | 90 | 2.5% |
| Q3 2022 | 265 | $3.8B | 169,866,039 | 36 | 110 | 67 | 0.7% |
| Q2 2022 | 270 | $5.0B | 167,652,372 | 60 | 75 | 83 | 0.4% |
| Q1 2022 | 236 | $4.5B | 168,700,886 | 50 | 60 | 85 | 0.4% |
| Q4 2021 | 214 | $4.7B | 201,307,467 | 30 | 70 | 71 | 0.7% |
| Q3 2021 | 219 | $6.1B | 197,146,278 | 39 | 67 | 72 | 0.5% |
| Q2 2021 | 221 | $5.2B | 210,339,132 | 62 | 65 | 60 | 1.0% |
| Q1 2021 | 190 | $3.1B | 162,681,738 | 24 | 58 | 60 | 1.4% |
| Q4 2020 | 203 | $3.7B | 184,659,285 | 38 | 60 | 63 | 0.9% |
| Q3 2020 | 175 | $2.8B | 169,630,738 | 29 | 49 | 53 | 0.7% |
| Q2 2020 | 162 | $3.2B | 164,619,553 | 20 | 58 | 47 | 0.7% |
| Q1 2020 | 186 | $2.3B | 160,687,229 | 28 | 62 | 56 | 0.3% |
| Q4 2019 | 210 | $3.3B | 161,427,041 | 38 | 71 | 62 | 0.4% |
| Q3 2019 | 196 | $3.2B | 163,360,787 | 25 | 65 | 63 | 0.2% |
| Q2 2019 | 216 | $4.0B | 176,377,576 | 38 | 82 | 48 | 0.3% |
| Q1 2019 | 218 | $6.1B | 167,383,449 | 25 | 71 | 60 | 0.3% |
| Q4 2018 | 231 | $5.2B | 176,002,935 | 4 | 5 | 6 | 0.3% |